Results 71 to 80 of about 41,134 (250)

User-Centric Blind Interference Alignment Design for Visible Light Communications

IEEE Access, 2019
Visible light communications (VLC) are considered as a key technology for future wireless communications. In order to mitigate the interference, several transmit precoding (TPC) schemes have been proposed for VLC.
Ahmad Adnan-Qidan, Maximo Morales Cespedes, Ana Garcia Armada   +2 more
doaj   +1 more source

Hydrophobic 1D and 3D Anodic Alumina Radiative Coolers on Aluminum: Humidity‐Resilient Daytime Sub‐Ambient Cooling

Advanced Optical Materials, EarlyView.
1D and 3D nanoporous anodic aluminum oxide (AAO) surfaces were functionalized with stearic acid (STA) to increase hydrophobicity and reduce the influence of humidity on radiative cooling performance. The STA coating improves cooling behavior under humid atmospheric conditions (Madrid summer), before while keeping the optical properties required for ...
Luis Moreno‐Sanabria, Carlos G. Cobos, Nadia Pastor, Marisol Martín‐González, Cristina V. Manzano   +4 more
wiley   +1 more source

Adaptive Postdistortion for Nonlinear LEDs in Visible Light Communications

IEEE Photonics Journal, 2014
In a visible light communication (VLC) system, the light-emitting diode (LED) is the major source of nonlinearity. The nonlinear effects in the VLC system are different from the conventional wireless communications system.
H. Qian, S. J. Yao, S. Z. Cai, T. Zhou
doaj   +1 more source

Optically Active Birefringent Polymer–Lipid Hybrid Microparticles With Dual‐Stimuli Responsiveness

Advanced Optical Materials, EarlyView.
The present study reports on geometrically tunable, magnetic and NIR‐stimuli‐responsive anisotropic microparticles that exhibit intrinsic birefringence due to their lamellar crystalline architecture, enabling label‐free detection under a polarized light.
Burcu Okmen Altas, Emre Bukusoglu, Nihal Aydogan   +2 more
wiley   +1 more source

A Comprehensive Investigation on Multi-User Interference Effects in Vehicular Visible Light Communications. [PDF]

Sensors (Basel), 2023
Plascencia E, Guan H, Chassagne L, Barrois O, Shagdar O, Căilean AM.   +5 more
europepmc   +1 more source

Indoor Positioning for Multiphotodiode Device Using Visible-Light Communications

IEEE Photonics Journal, 2016
With the widespread use of light-emitting diodes (LEDs) for lighting, their ability to support communications through visible light has become promising for various wireless applications.
Wei Xu, Jia Wang, Hong Shen, Hua Zhang, Xiaohu You   +4 more
doaj   +1 more source

Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes

Advanced Optical Materials, EarlyView.
Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula, Antonio Agresti, Sara Pescetelli, Sofia Sechi, Nicola Sestu, Francesco Mattana, Federico Pitzalis, Riccardo Pau, David Dell'Angelo, Alessio Filippetti, Alessandro Mattoni, Anna Pazniak, Daniela Marongiu, Valeria Demontis, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni   +17 more
wiley   +1 more source

Visible Light Communications-Based Assistance System for the Blind and Visually Impaired: Design, Implementation, and Intensive Experimental Evaluation in a Real-Life Situation. [PDF]

Sensors (Basel), 2023
Căilean AM, Avătămăniței SA, Beguni C, Zadobrischi E, Dimian M, Popa V.   +5 more
europepmc   +1 more source

Resource Efficient and Robust RSMA for Visible Light Communications

IEEE Photonics Journal
Spectral efficiency (SE) and energy efficiency (EE) are two main metrics for the transmit design in Visible Light Communications (VLC). However, the SE-optimal and EE-optimal strategies may be in conflict with each other to some extent. In this paper, we
Jianfei Hu, Chen Sun, Jiaheng Wang, Xiqi Gao, Liang Xia, Qixing Wang   +5 more
doaj   +1 more source

From Molecular Design to Optical Anisotropy: Orientation Control in BODIPY Langmuir‐Blodgett Films

Advanced Optical Materials, EarlyView.
The supramolecular organization of amphiphilic boron‐dipyrromethene (BODIPY) dyes in Langmuir–Blodgett monolayers is shown to govern their optical anisotropy. By correlating nanoscale imaging and angle‐resolved spectroscopy, we reveal symmetry‐driven control of transition dipole orientation, enabling either in‐plane or out‐of‐plane optical responses ...
Lilia Huynh, Jason Bessonnet, Lucas Frédéric, Céline Fiorini‐Debuisschert, Simon Vassant, Hélène Fensterbank, Emmanuel Allard, David Kreher, Fabrice Charra, Nicolas Fabre   +9 more
wiley   +1 more source